A gem. Hibiki, an electronic composition, was written for the now legendary Federation of Iron and Steel pavilion at the1970 World fair in Osaka - a massive space with 700 speakers under the floor and a further 128 distributed throughout the auditorium and suspended in the air. The result is massive and deeply impressive, even in stereo, and is a classic of the genre. It's accompanied here by the 1972 Polytope de Cluny - designed for the Roman Baths at Cluny and employing as its visual component a highly complex, calculated programme of laser projections (see the dvd) the sound continues in the vein of Hibiki Hana Ma, though its mood is less stark. A very welcome release.L